/* NOTICE
    OpenJaWS - Open Java Weather Station
    
    Copyright (C) 2008 Grant Gardner <grant@lastweekend.com.au>
    
    OpenJaWS is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
NOTICE */

package au.com.lastweekend.openjaws.plugins;

import au.com.lastweekend.openjaws.api.Readings;
import au.com.lastweekend.openjaws.api.WeatherPlugin;
import au.com.lastweekend.openjaws.api.WeatherPluginException;

/**
 * 
 * @author grant@lastweekend.com.au
 * @version $Id: codetemplates.xml,v 1.2 2005/01/22 06:53:11 ggardner Exp $
 */
public abstract class DecoratedWeatherPlugin implements WeatherPlugin {

    private WeatherPlugin decorated;
    private boolean enabled = true;

    /**
     * 
     * @param decorated
     *            may be null
     */
    public DecoratedWeatherPlugin(WeatherPlugin decorated) {

        super();
        this.decorated = decorated;
    }

    protected void preProcess(Readings readings) throws WeatherPluginException {

    }

    public final void process(Readings readings) throws WeatherPluginException {

        if (enabled) {
            preProcess(readings);
        }

        if (decorated != null) {
            decorated.process(readings);
        }

        if (enabled) {
            postProcess(readings);
        }

    }

    protected void postProcess(Readings readings) throws WeatherPluginException {

    }

    public boolean isEnabled() {

        return enabled;
    }

    /**
     * 
     * @param enabled
     *            true to enable this plugin
     */
    public void setEnabled(boolean enabled) {

        this.enabled = enabled;
    }

}
